status report st & hpk plus add. scratch tests
DESCRIPTION
Status report St & HPK plus add. Scratch tests. IEKP – University of Karlsruhe Frank Hartmann. QTC (sensors from JAN & FEB). Optical inspection of KA-Set 10 &11 (33/35) Electrical results of KA-Set 10/1 W5B (8/8) KA-Set 10/2 W5B (13/13) KA-Set 11/1 W6B(5/10) - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/1.jpg)
25.2.2003 Sensor meeting F. Hartmann 1
Status report St & HPK plus add. Status report St & HPK plus add. Scratch tests.Scratch tests.
IEKP – University of Karlsruhe
Frank Hartmann
![Page 2: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/2.jpg)
25.2.2003 Sensor meeting F. Hartmann 2
QTC QTC (sensors from JAN & FEB)(sensors from JAN & FEB) • Optical inspection of KA-Set 10 &11 (33/35)• Electrical results of
– KA-Set 10/1 W5B (8/8)– KA-Set 10/2 W5B (13/13)– KA-Set 11/1 W6B (5/10)– KA-Set 11/2 W6B (4/4)– KA-Set H5 W1TID (3/37)
• Some high IV “I-t”– Some currents are improving with time– MANY sensors at the IV limit
• Possible explanation for the high IV and discrepancy of CMS & ST measurements.
![Page 3: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/3.jpg)
25.2.2003 Sensor meeting F. Hartmann 3
Optical inspectionOptical inspection
A B C D0
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5
# of
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KA-S10/1Batch 31850W5B Del. 9.1.2003
A B C D0
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KA-S11/1Batch 32961W6B 9.1.2003
A B C D0
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KA-S11/2Batch 39728W6B9.1.2003
A B C D0
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KA-S10/2Batch 37528W5B (11/13)Del. 9.1.2003
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25.2.2003 Sensor meeting F. Hartmann 4
2 Sensors class „C“2 Sensors class „C“
30211023185021 30211023752820
IV OK! 2 rejects!
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25.2.2003 Sensor meeting F. Hartmann 5
KA Set S10 KA Set S10 (21 sensors W5B)(21 sensors W5B)
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30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818
1 30211023752821A 30211023752822a 30211023752823
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0 100 200 300 400 500 600 70010-12
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30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818
1 30211023752821A 30211023752822a 30211023752823
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1
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246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768
A
BCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBWBXBYBZCACBCCCDCECFCGCHCICJCKCLCMCNCOCPCQCRCSCTCUCVCWCXCYCZDADBDCDDDEDFDGDHDIDJDKDLDMDNDODPDQDRDSDTDUDVDWDXDYDZEAEBECEDEEEFEGEHEIEJEKELEMENEOEPEQERESETEUEVEWEXEYEZFAFBFCFDFEFFFGFHFIFJFKFLFMFNFOFPFQFRFSFTFUFVFWFXFYFZGAGBGCGDGEGFGGGHGIGJGKGLGMGNGOGPGQGRGSGTGUGVGWGXGYGZHAHBHCHDHEHFHGHHHIHJHKHLHMHNHOHPHQHRHSHTHUHVHWHXHYHZIAIBICIDIEIFIGIHIIIJIKILIMINIOIPIQIRISITIUIVIWIXIYIZJAJBJCJDJEJFJGJHJIJJJKJLJMJNJOJPJQJRJSJTJUJVJWJXJYJZKAKBKCKDKEKFKGKHKIKJKKKLKMKNKOKPKQKRKSKTKUKVKWKXKYKZLALBLCLDLELFLGLHLILJLKLLLMLNLOLPLQLRLSLTLULVLWLXLYLZMAMBMCMDMEMFMGMHMIMJMKMLMMMNMOMPMQMRMSMTMUMVMWMXMYMZNANBNCNDNENFNGNHNINJNKNLNMNNNONPNQNRNSNTNUNVNWNXNYNZOAOBOCODOEOFOGOHOIOJOKOLOMONOOOPOQOROSOTOUOVOWOXOYOZPAPBPCPDPEPFPGPHPIPJPKPLPMPNPOPPPQPRPSPTPUPVPWPXPYPZQAQBQCQDQEQFQGQHQIQJQKQLQMQNQOQPQQQRQSQTQUQVQWQXQYQZRARBRCRDRERFRGRHRIRJRKRLRMRNRORPRQRRRSRTRURVRWRXRYRZSASBSCSDSESFSGSHSISJSKSLSMSNSOSPSQSRSSSTSUSVSWSXSYSZTATBTCTDTETFTGTHTITJTKTLTMTNTOTPTQTRTSTTTUTVTWTXTYTZUAUBUCUDUEUFUGUHUIUJUKULUMUNUOUPUQURUSUTUUUVUWUXUYUZVAVBVCVDVEVFVGVHVIVJVKVLVMVNVOVPVQVRVSVTVUVVVWVXVYVZWAWBWCWDWEWFWGWHWIWJWKWLWMWNWOWPWQWRWSWTWUWVWWWXWYWZXAXBXCXDXEXFXGXHXIXJXKXLXMXNXOXPXQXRXSXTXUXVXWXXXYXZYAYBYCYDYEYFYGYHYIYJYKYLYMYNYOYPYQYRYSYTYUYVYWYXYYYZZAZBZCZDZEZFZGZHZIZJZKZLZMZNZOZPZQZRZSZTZUZVZWZXZYZZAAAAABAACAADAAEAAFAAGAAHAAIAAJAAKAALAAMAANAAOAAPAAQAARAASAATAAUAAVAAWAAXAAYAAZABAABBABCABDABEABFABGABHABIABJABKABLABMABNABOABPABQABRABSABTABUABVABWABXABYABZACAACBACCACDACEACFACGACHACIACJACKACLACMACN
a
bcdegh
i
jklmnopqrstuvwxyzaaabacadaeafagahaiajakalamanaoapaqarasatauavawaxayazbabbbcbdbebfbgbhbibjbkblbmbnbobpbqbrbsbtbubvbwbxbybzcacbcccd
cecfcgchcicjckclcmcncocpcq
crcsctcucvcwcxcyczdadbdcdddedfdgdhdidjdkdldmdndodpdqdrdsdtdudv
dw
dxdydzeaebecedeeefegeheiejekelemeneoepeqereseteuevewexeyezfafbfcfdfefffgfhfifjfkflfmfnfofpfqfrfsftfufvfwfxfyfzgagbgcgdgegfggghgigj
gkglgmgngogpgqgrgsgtgugvgwgxgygzhahbhchdhehfhghhhi
hjhkhlhmhnhohphqhrhshthuhvhwhxhyhziaibicidieifigihiiijikiliminioipiqirisitiuiviwixiyizjajbjcjdjejfjgjhjijjjkjljmjnjojpjqjrjsjtjujvjwjxjy
jzkakbkckdkekfkgkhkikjkkklkmknkokpkqkrksktkukvkwkxkykzlalb
lcldlelflglhliljlklllmlnlolplqlrlsltlulvlwlxlylzma
mbmcmdmemfmgmhmimjmkmlmmmnmompmqmrmsmtmumvmwmxmymznanbncndnenfngnhninjnknlnmnnnonpnqnrnsntnunvnwnxnynzoaobocodoeofogohoiojokolomonooopoqorosotouovowoxoyozpapbpcpdpepfpgphpipjpkplpmpnpopppqprpsptpupvpw
pxpypzqaqbqcqdqeqfqgqhqiqjqkqlqmqnqoqpqqqrqsqtquqvqwqxqyqzrarbrcrdrerfrgrh
rirjrkrlrmrnrorprqrrrsrtrurvrwrxryrzsasbscsdsesfsgshsisjskslsmsnsospsqsrssstsusvswsx
sysztatbtctdtetftgthtitjtktltmtntotptqtrtstttutvtwtxtytzuaubucudueufuguhuiujukulumunuoupuqurusutuuuvuwuxuyuzvavbvcvdvevfvgvhvivjvkvlvmvnvovpvqvrvsvtvuvvvwvxvyvzwawbwcwdwewfwgwhwiwjwkwlwmwnwowpwqwrwswtwuwvwwwxwywzxaxbxcxexfxgxhxixjxkxlxmxnxoxpxqxrxsxtxuxvxwxxxyxzyaybycydyeyfygyhyiyjykylymynyoypyqyrysytyuyvywyxyyyzzazbzczdzezfzgzhzizjzkzlzmznzozpzqzrzsztzuzvzwzxzyzzaaaaabaacaadaaeaafaagaahaaiaajaakaalaamaanaaoaapaaqaaraasaataauaavaawaaxaayaazabaabbabcabdabeabfabgabhabiabjabkablabmabnaboabpabqabrabsabtabuabvabwabxabyabzacaacbaccacdaceacfacgachaciacjackaclacm
acn
30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818
1 30211023752821A 30211023752822a 30211023752823
Co
uplin
g C
ap
acita
nce
[F
]
strip number
![Page 6: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/6.jpg)
25.2.2003 Sensor meeting F. Hartmann 6
KA Set S10 ---- globalKA Set S10 ---- global
160 170 180 190 200 210 220 230 2400
1
2
3
4
5
6
# o
f se
nso
rs
depletion voltage [V]
-50 0 50 100 150 200 250 300 350 400
0
1x1017
2x1017
3x1017
4x1017
5x1017
123
45
67
8910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
35363738394041424344454647484950515253545556575859606162636465666768697071
ABC
DE
FG
HIJK
LM
NO
PQ
RS
TU
VW
XY
ZAA
ABAC
ADAE
AFAG
AHAIAJAK
ALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBS
a
bc
de
fg
hi
jk
lm
no
pq
rs
tu
vw
xy
zaa
abacad
aeafag
ahai
ajakalamanaoapaqarasatauavawaxayazbabbbcbdbebfbgbhbibjbkblbmbnbobpbqbrbs
30211023185001 30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818
1 30211023752821A 30211023752822a 30211023752823
Cap
acita
nce-2
[F
-2]
Voltage [V]
0 100 200 300 400 500 60010-8
10-7
10-6
10-5
1
2
34567
89101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111
A
B
CDEFG
HIJKLMNOPQRSTUVWXY
ZAAABACAD
AEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBWBXBYBZCACBCCCDCECFCGCHCICJCKCLCMCNCOCPCQCRCSCTCUCVCWCXCYCZDADBDCDDDEDFDG
a
bcdefg
hi jklmnop
qrstu
vwxyzaaabacadaeafagahaiajakalamanaoapaqarasatauavawaxayazbabbbcbdbebfbgbhbibjbkblbmbnbobpbqbrbsbtbubvbwbxbybzcacbcccdcecfcgchcicjckclcmcncocpcqcrcsctcucvcwcxcyczdadbdcdddedfdg 30211023185001
30211023185002 30211023185005 30211023185009 30211023185010 30211023185017 30211023185022 30211023752801 30211023752802 30211023752805 30211023752806 30211023752810 30211023752813 30211023752814 30211023752817 30211023752818
1 30211023752821A 30211023752822a 30211023752823
Leak
age
Cur
rent
[A
]
Voltage [V]
0 5000 10000 15000 20000 25000 30000 350000
2
4
6
8
10
12
14
16
18
# o
f se
nso
rs
current [nA]
Itot
@ V1 [nA] I
tot @ V2 [nA]
![Page 7: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/7.jpg)
25.2.2003 Sensor meeting F. Hartmann 7
KA Set S11 (9/14 sensors W5A)KA Set S11 (9/14 sensors W5A)
0 100 200 300 400 500
1,0x106
1,2x106
1,4x106
1,6x106
1,8x106
2,0x106
30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822
Bia
s R
esis
tanc
e [
]
strip number
0 100 200 300 400 50010-10
10-9
10-8
10-7
10-6
10-5
30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822
Leak
age
Cur
rent
[A
]
strip number
0 100 200 300 400 500
2,0x10-10
4,0x10-10
6,0x10-10
8,0x10-10
1,0x10-9 30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822 Cc
Cou
plin
g C
apac
itanc
e [F
]
strip number0 1 2 3 4 5 6 7 8 9
0,0
0,5
1,0
1,5
2,0
2,5
3,0#
of s
enso
rs
# of bad strips
![Page 8: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/8.jpg)
25.2.2003 Sensor meeting F. Hartmann 8
KA Set S11 ---- globalKA Set S11 ---- global
0 2000 4000 6000 8000 10000 12000 140000
1
2
3
4
5
6
7
8
# o
f se
nso
rscurrent [nA]
Itot
@ V1 [nA] I
tot @ V2 [nA]
-50 0 50 100 150 200 250 300 350 400-5,0x1016
0,0
5,0x1016
1,0x1017
1,5x1017
2,0x1017
2,5x1017
3,0x1017
3,5x1017
4,0x1017
30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822C
ap
aci
tan
ce-2 [
F-2]
Voltage [V]
0 100 200 300 400 500 60010-8
10-7
10-6
10-5
10-4 30211223296114 30211223296121 30211223296122 30211223296123 30211223296124 30211223972807 30211223972812 30211223972816 30211223972822
Leak
age
Cur
rent
[A
]
Voltage [V]
140 160 180 200 220 240 260 280 300 3200,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
# of
sen
sors
depletion voltage [V]
![Page 9: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/9.jpg)
25.2.2003 Sensor meeting F. Hartmann 9
Comparison of DatasComparison of Datassensor ID I_450(µA) Nr.of I_450(µA) Nr. of
bad stripsPinholes Cac bad stripsPinholes Cac30211023185001 0,55823 6 3 3 0,60 5 530211023185002 0,78881 2 1 1 0,69 1 130211023185005 0,56738 0 0,69 030211023185009 0,53167 0 0,66 030211023185010 0,5978 1 1 0,64 0
30211223296121 9,4 2 2 1,24 2 230211223296122 1,1 1 1,08 030211223296123 1,1 3 1 2 1,24 3 1 230211223296124 2,4 3 1 1,71 1 1
• For 17 sensors no data available ! (~50% data still missing!!!!!!)• Good agreement for pinholes, shorts and Rpoly!
• Ileak & CaC not measured by STAdd. defective strips have scratches!
no add. Pinholes due to scratches!• Higher current @ 450V due to scratches!• QTC & ST agree on IV up to the additional ~linear~ increase!
![Page 10: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/10.jpg)
25.2.2003 Sensor meeting F. Hartmann 10
Same IV up to Same IV up to “soft strip breakdown”“soft strip breakdown”
0 100 200 300 400 500 6001E-8
1E-7
1E-6
1E-5
ST Karlsruhe
curr
en
t [A
]
bias voltage [V]
First strip Second strip
![Page 11: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/11.jpg)
25.2.2003 Sensor meeting F. Hartmann 11
Summary of QTCSummary of QTC
KA-S10/1 KA-S10/2 KA-S11/1 KA-S11/2
Optical inspected
8/8 11/13 10/10 4/4
measured 7/8 12/13 4/10 3/4
Failures
Opt/IV/
strips
1/0/0 1/1/0 0/0/0 0/0/0
Accepted % 87 84 100 100
![Page 12: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/12.jpg)
25.2.2003 Sensor meeting F. Hartmann 12
I-t @ 450VI-t @ 450V
0 200 400 600 800 1000 1200 1400 16004,0x10-6
5,0x10-6
6,0x10-6
7,0x10-6
8,0x10-6
9,0x10-6
1,0x10-5
1,1x10-5
curr
en
t [A
]
time [s]
0 200 400 600 800 10004,0x10-6
4,5x10-6
5,0x10-6
5,5x10-6
6,0x10-6
6,5x10-6
7,0x10-6
7,5x10-6
curr
en
t [A
]
time [s]
1.
2.
10µA
5 µA
7 µA
5 µASaturation not yet reached
![Page 13: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/13.jpg)
25.2.2003 Sensor meeting F. Hartmann 13
I-t @ 550VI-t @ 550V
0 200 400 600 800 1000 12007,5x10-6
8,0x10-6
8,5x10-6
9,0x10-6
9,5x10-6
1,0x10-5
1,1x10-5
1,1x10-5
1,2x10-5cu
rre
nt [
A]
time [s]
Min not reached!
12 µA
8 µA
![Page 14: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/14.jpg)
25.2.2003 Sensor meeting F. Hartmann 14
I-t @ 550V over nightI-t @ 550V over night
0 1000 2000 3000 4000 5000 60001,4x10-5
1,6x10-5
1,8x10-5
2,0x10-5
2,2x10-5
2,4x10-5
curr
en
t [A
]
time [10s]
30211223972812
![Page 15: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/15.jpg)
25.2.2003 Sensor meeting F. Hartmann 15
Improvements of IVImprovements of IV
0 100 200 300 400 500 600
1E-7
1E-6
1E-5
1. measurement 25.1.2003 2. measurement 13.2.2003 3. measurement 13.2.2003 4. measurement 13.2.2003
curr
en
t [A
]
bias voltage [V]
e.g. 30211023752813
I-t (~10 min)betweeneach IV-curve !
![Page 16: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/16.jpg)
25.2.2003 Sensor meeting F. Hartmann 16
IV-problemIV-problem
• 5 from 6 sensors improved, but…– they needed ~20 min or longer to reach the
specified limit!– each sensor has a few „high leaky“ strips! – Σ leaky strips ~ IV ( few strips drive IV)
– EACH leaky strip is scratched !
Attention: standard test with “I-t” would had have jected 6 instead of 1
![Page 17: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/17.jpg)
25.2.2003 Sensor meeting F. Hartmann 17
Leaky stripsLeaky strips
30211223972812 strip 49
30211223972812 strip 282
![Page 18: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/18.jpg)
25.2.2003 Sensor meeting F. Hartmann 18
Leaky strips (2)Leaky strips (2)30211223972812 strip 282
30211223972816 strip 3
![Page 19: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/19.jpg)
25.2.2003 Sensor meeting F. Hartmann 19
Leaky strips (3)Leaky strips (3)
30211223972816 strip 14
30211223972816 strip 476
?
![Page 20: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/20.jpg)
25.2.2003 Sensor meeting F. Hartmann 20
Solving/Explaining the problem!?!???Solving/Explaining the problem!?!???
• Clear correlation between IV and leaky strips and scratches on sensors observed!
• No IV-breaks on Minisensors ! Handling !
Scratch test:– Scratchtest on minisensors to reproduce effect
• Needle
• Pencil (2B)
• screwdriver
![Page 21: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/21.jpg)
25.2.2003 Sensor meeting F. Hartmann 21
Scratches on MinisensorScratches on Minisensor
„Soft“ scratches with probe needle
Carbon residues of pencil
![Page 22: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/22.jpg)
25.2.2003 Sensor meeting F. Hartmann 22
Deep scratches on MinisensorDeep scratches on Minisensor
„Not-so-SOFT“ scratcheswith screwdriver
![Page 23: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/23.jpg)
25.2.2003 Sensor meeting F. Hartmann 23
IV of ST-minisensorIV of ST-minisensor
0 100 200 300 400 500 6000,00E+000
2,00E-008
4,00E-008
6,00E-008
8,00E-008
1,00E-007
1,20E-007
1,40E-007
1,60E-007
1,80E-007
undamaged small scratch with needle deep scratch with needle scratched with pencil 2B scratched with screwdriver
curr
en
t [A
]
bias voltage [V]
x3
![Page 24: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/24.jpg)
25.2.2003 Sensor meeting F. Hartmann 24
ILeak (regard strips 8-15)ILeak (regard strips 8-15)
0 5 10 15 20 25 301E-10
1E-9
1E-8
undamaged small scratch with needle deep scratch with needle scratched with pencil 2B scratched with screwdriver
curr
en
t [A
]
strip number
A few single strips show high leakage current!
![Page 25: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/25.jpg)
25.2.2003 Sensor meeting F. Hartmann 25
Ileak ramps on scratched stripsIleak ramps on scratched strips
0 100 200 300 400 500 600
1E-10
1E-9
1E-8
strip 5 (not damaged) strip 8 strip 9 strip 10 strip 11 strip 13
stri
p c
urr
en
t [A
]
bias voltage [V]
x70
All ramps on screwdriver scratched minisensor!The ramp behavior is similar to the global IV!
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25.2.2003 Sensor meeting F. Hartmann 26
Correlation Correlation strip current strip current IV IV
Undamaged minisensor @ 400V:Ileak ~ 0,2nA x 192 strips ~ 35nAIV ~ 38nA
Damaged minisensor @ 400V: Ileak damaged strips ~ 55nA Ileak all ~ 100nA IV ~ 120nA
High IV behavior is driven by some leaky strips !
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25.2.2003 Sensor meeting F. Hartmann 27
Similar defect in CDF sensorsSimilar defect in CDF sensorsDefect in the p+ layer!!Defect in the p+ layer!!
BUT: scratches do not effect p+ ( no pinholes!)
Vbias (V)1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 00
Cu
rre
nt(
A)
10-11
10-10
10-9
10-8
10-7
Current over Vbias (individual strip ) 0-100V
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25.2.2003 Sensor meeting F. Hartmann 28
Idiel on scratched MinisensorIdiel on scratched Minisensor
0 5 10 15 20 25 30
1E-13
1E-12
1E-11
1E-10
1E-9
1E-8
1E-7
1E-6
1E-5Id
iel [
A]
strip number
Pinholes should be here !
Effect is located in the Al layer, above the oxide!
![Page 29: Status report St & HPK plus add. Scratch tests](https://reader035.vdocuments.us/reader035/viewer/2022062322/5681479f550346895db4d9d8/html5/thumbnails/29.jpg)
25.2.2003 Sensor meeting F. Hartmann 29
Summary of scratch-testSummary of scratch-test• Scratches increase individual strip leakage current• Some few leaky strips drive high IV• “Hard” mechanical force necessary to damage sensor! • ALL unscratched minisensors show GOOD IV !• ALL leaky strips are scratched, but not all scratched strips
are leaky !• Pinholes???
– no pinholes produced in scratch-test– no big differences between data of ST and QTC (w.r.t. pinholes)
Effect is located in the Al layer, not the p+ layer
CMS sensors have metal strip overhang!!!!
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25.2.2003 Sensor meeting F. Hartmann 30
HPK W1TID qualificationHPK W1TID qualification
• PQC fine, but quite low depletion voltages
• BTC OK
• Masks: postponed -- should be done in Vienna, cause CMM breakdown in KA
• QTC: fine, but quite low depletion voltages!– Very low total leakage currents. – 3/27 sensors measured (no single strip failure)
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25.2.2003 Sensor meeting F. Hartmann 31
KA SET H5 (3/37 W1TID)KA SET H5 (3/37 W1TID)
0 100 200 300 400 500 600 70010-12
10-11
10-10
10-9
10-8
10-7
10-6
30221525000116 30221525000138 30221525000139
Leak
age
Cur
rent
[A
]
strip number0 100 200 300 400 500 600 700
1.0x10-10
2.0x10-10
3.0x10-10
4.0x10-10
5.0x10-10
6.0x10-10
7.0x10-10
8.0x10-10
30221525000116 30221525000138 30221525000139
Cou
plin
g C
apac
itanc
e [F
]
strip number
0 100 200 300 400 500 600 700
1.0x106
1.2x106
1.4x106
1.6x106
1.8x106
2.0x106
30221525000116 30221525000138 30221525000139
Bia
s R
esis
tanc
e [
]
strip number
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25.2.2003 Sensor meeting F. Hartmann 32
KA SET H5 --- global KA SET H5 --- global
105 110 115 120 125 130 1350
1
2
# of
sen
sors
depletion voltage [V]
0 100 200 300 400 500 60010-9
10-8
10-7
10-6
30221525000116 30221525000138 30221525000139
Leak
age
Cur
rent
[A
]
Voltage [V]
-50 0 50 100 150 200 250 300 350 400
0.0
2.0x1016
4.0x1016
6.0x1016
8.0x1016
1.0x1017
1.2x1017
30221525000116 30221525000138 30221525000139
Cap
acita
nce-2
[F
-2]
Voltage [V]